/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. */

#include "PaddleCAPI.h"
#include "PaddleCAPIPrivate.h"

using paddle::capi::cast;

#define castArg(v) cast<paddle::capi::CArguments>(v)
#define castIVec(v) cast<paddle::capi::CIVector>(v)

extern "C" {
int PDArgsCreateNone(PD_Arguments* args) {
  auto ptr = new paddle::capi::CArguments();
  *args = ptr;
  return kPD_NO_ERROR;
}

int PDArgsDestroy(PD_Arguments args) {
  if (args == nullptr) return kPD_NULLPTR;
  delete castArg(args);
  return kPD_NO_ERROR;
}

int PDArgsGetSize(PD_Arguments args, uint64_t* size) {
  if (args == nullptr || size == nullptr) return kPD_NULLPTR;
  *size = castArg(args)->args.size();
  return kPD_NO_ERROR;
}

int PDArgsResize(PD_Arguments args, uint64_t size) {
  if (args == nullptr) return kPD_NULLPTR;
  castArg(args)->args.resize(size);
  return kPD_NO_ERROR;
}

int PDArgsSetValue(PD_Arguments args, uint64_t ID, PD_Matrix mat) {
  if (args == nullptr || mat == nullptr) return kPD_NULLPTR;
  auto m = paddle::capi::cast<paddle::capi::CMatrix>(mat);
  if (m->mat == nullptr) return kPD_NULLPTR;
  auto a = castArg(args);
  if (ID >= a->args.size()) return kPD_OUT_OF_RANGE;
  a->args[ID].value = m->mat;
  return kPD_NO_ERROR;
}

int PDArgsGetValue(PD_Arguments args, uint64_t ID, PD_Matrix mat) {
  if (args == nullptr || mat == nullptr) return kPD_NULLPTR;
  auto m = paddle::capi::cast<paddle::capi::CMatrix>(mat);
  auto a = castArg(args);
  if (ID >= a->args.size()) return kPD_OUT_OF_RANGE;
  m->mat = a->args[ID].value;
  return kPD_NO_ERROR;
}

int PDArgsGetIds(PD_Arguments args, uint64_t ID, PD_IVector ids) {
  if (args == nullptr || ids == nullptr) return kPD_NULLPTR;
  auto iv = castIVec(ids);
  auto a = castArg(args);
  if (ID >= a->args.size()) return kPD_OUT_OF_RANGE;
  iv->vec = a->args[ID].ids;
  return kPD_NO_ERROR;
}

int PDArgsSetIds(PD_Arguments args, uint64_t ID, PD_IVector ids) {
  //! TODO(lizhao): Complete this method.
  if (args == nullptr || ids == nullptr) return kPD_NULLPTR;
  auto iv = paddle::capi::cast<paddle::capi::CIVector>(ids);
  if (iv->vec == nullptr) return kPD_NULLPTR;
  auto a = castArg(args);
  if (ID >= a->args.size()) return kPD_OUT_OF_RANGE;
  a->args[ID].ids = iv->vec;
  return kPD_NO_ERROR;
}

int PDArgsSetSequenceStartPos(PD_Arguments args,
                              uint64_t ID,
                              PD_IVector seqPos) {
  if (args == nullptr || seqPos == nullptr) return kPD_NULLPTR;
  auto iv = paddle::capi::cast<paddle::capi::CIVector>(seqPos);
  if (iv->vec == nullptr) return kPD_NULLPTR;
  auto a = castArg(args);
  if (ID >= a->args.size()) return kPD_OUT_OF_RANGE;
  a->args[ID].sequenceStartPositions =
      std::make_shared<paddle::ICpuGpuVector>(iv->vec);
  return kPD_NO_ERROR;
}

int PDArgsSetSubSequenceStartPos(PD_Arguments args,
                                 uint64_t ID,
                                 PD_IVector subSeqPos) {
  if (args == nullptr || subSeqPos == nullptr) return kPD_NULLPTR;
  auto iv = paddle::capi::cast<paddle::capi::CIVector>(subSeqPos);
  if (iv->vec == nullptr) return kPD_NULLPTR;
  auto a = castArg(args);
  if (ID >= a->args.size()) return kPD_OUT_OF_RANGE;
  a->args[ID].subSequenceStartPositions =
      std::make_shared<paddle::ICpuGpuVector>(iv->vec);
  return kPD_NO_ERROR;
}

int PDArgsGetSequenceStartPos(PD_Arguments args,
                              uint64_t ID,
                              PD_IVector seqPos) {
  if (args == nullptr || seqPos == nullptr) return kPD_NULLPTR;
  auto iv = castIVec(seqPos);
  auto a = castArg(args);
  if (ID >= a->args.size()) return kPD_OUT_OF_RANGE;
  paddle::Argument& arg = a->args[ID];
  iv->vec = arg.sequenceStartPositions->getMutableVector(false);
  return kPD_NO_ERROR;
}

int PDArgsGetSubSequenceStartPos(PD_Arguments args,
                                 uint64_t ID,
                                 PD_IVector subSeqPos) {
  if (args == nullptr || subSeqPos == nullptr) return kPD_NULLPTR;
  auto iv = castIVec(subSeqPos);
  auto a = castArg(args);
  if (ID >= a->args.size()) return kPD_OUT_OF_RANGE;
  paddle::Argument& arg = a->args[ID];
  iv->vec = arg.subSequenceStartPositions->getMutableVector(false);
  return kPD_NO_ERROR;
}
}